also: オフ・シーズン
Refers to the period when a particular activity, tourism, or sport is not in its peak season.
オフシーズンはホテルが安くなる。
Hotels become cheaper in the off-season.
このリゾート地はオフシーズンでも楽しめる。
You can enjoy this resort even in the off-season.
If you travel during the off-season, the prices are cheaper.
This hotel is very cheap because of the off-season rate.